Sharpening device.



R. S. BLAIR.

SHARPENING DEVICE.

APPLICATION man JULY 13, 1907.

Patented Feb. 29, 1916.`

ROBERT S. BLAIR, 0F NEW. ROCHELLE, NEW YORK.

SHARPENING DEVICE.

Application led July 13, 1907. Serial No. 383,692.

To all 'w11 om it may concern Be it known that I, ROBERT S. BLAIR, a Citizen of the United States, residing at New Rochelle, in the county of Westchester and State of New York, have invented certain new and useful Improvements 1n Sharpening Devices, of which the f ollowing is a full, clear, and exact descriptlon, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to edge tools and more particularly to sharpening devices therefor.

One of the objects thereof is to provide simple and efficient devices for sharpening a blade.

Another object is to provide practical means whereby devices of this nature are adapted to perform protective and other functions.

Another object is to provide a convenient and reliable sheath fora blade.

Another object is to provide effective means whereby a sheath 0r other Iprotective device is adapted to aid in sharpening the blade which it protects.

Other objects will be in partobvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which ,will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

1n the accompanying drawings wherein are shown one or more of various possible embodiment-s of the several features 0f this invention; Figure 1 is an elevation of a blade within a sheath, the nearer portion of the sheath being removed in order to show the construction more clearly. Fig. 2 is a sectional view taken along the line of Fig. l and appearing on a slightly larger scale. Fig. 3 is a side elevation of an ax and devices associated therewith. Fig. 4 is a sectional view taken substantially on the line g/-fz/ of Fig. 3 showing a detail of the construction thereof.

Similar reference characters refer to similar parts throughout the several views ofthe drawings.

Referring now to Fig. 3 of the drawings, there is shown an ax comprising the handle Specification of Letters Patent.

Patented Feb. 29, 1916.

used throughout this specification and the following claims, is intended to comprehend any characteristic of a surface whereby a metallic edge portion may be sharpened whether this surface be that of a metallic member, file, steel or the like, or be of the nature of emery or carborundum. These lining members 7, asbest shown in Fig. 4 of the drawings, are preferably of convex conformation and thus tend to give a hollow ground edge, or if desired they may be of any conformation best adapted to form the particular type of edge desired. Sheath 6 is open at the ends as at 8 and is provided with a strap 9, if desired, whereby the same may be rigidly held in a position in which it protects the edge of the blade.

The method of use ,of this embodiment of my invention is as follows. When it is desired merely to use the ax, strap 9, if the same is employed, is loosened and the sheath swung downwardly into a position substantially parallel with the handle 1. If it is desired to sharpen the kax the pin 3 is snapped out of position permitting the release of the arm 5 and the same may then be rocked as indica-ted in dotted line-s at 10, and rapidly grinds or sharpens the edge. If desired the arm 5, which is provided with a handle portion 11, may be reversed, that is the sheath may be placed upon the ax with the arm 5 extending away from the handle, whereby a freer swing in grinding is permitted. It is to be understood that the blade will ordinarily be sharpened by the mere swinging away of the sheath therefrom in the use of the ax, but the above described method wherein the sheath is released from the ax-handle is somewhat more rapid in its action.

In Fig. 1 is shown a knife-blade 12 within a sheath 13v provided with the abrasivememf bers 14, as perhaps best indicated in Fig. 2

and the following claims, is intended as descriptive of a function of any device adapted to tend to prevent the blade from` becoming dulled orfrom accidentally exercising its cutting functions.

It will thus be seen that I have provided a device by which the several objects of this invention are achieved. The sharpening of the blade is not only performed without requiring separate attention, but is quickly and accurately accomplished, the sheath members serving in the embodiment shown as guides in holding the blade in relation to the sharpening elements. Moreover, the sharpening or abrasive elements are 'protected as from rain and the like and may be readily cleansed. These elements, moreover, aid in holding the sheath members in stiff ened relation whereby the blade is more readily thrust between the same.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is l l. In a device of the'classl described,` in combination, a sheath comprising means adapted to protect a blade, and abrasive means mounted upon said protecting means adapted to sharpen said blad 2. In a device of the class described, in combination, a sheath comprising means adapted to` protect a blade, and abrasive means mounted upon said protecting means adapted to sharpen said blade, said abrasive means being mounted longitudinally of said sheath and being adapted to stifen the same.

3. In a device of the class described, in combination, a sheath, and abrasive means mounted upon said sheath adapted upon a blade being drawn lengthwise thereof to sharpen the same.

4. In a device of the class described, in

combination, a sheath, and abrasive means mounted upon said sheath adapted upon a blade'being drawn therefrom to sharpen the same, said abrasive means being formed and mounted to embrace the edge of the blade.

5. In a device of the class described, in combination, means extending entirely about a blade and adapted to protect theedge thereof, and abrasive means mounted within the same and adapted to sharpen said edge upon the yblade being drawn lengthwise of said first mentioned means..

6. In a device of the class described, in combination, a sheath comprising protective means extending along each side of 'a blade and connected across the back thereof, and labrasive means mounted within said sheath and adapted to engage opposite sides of the ,edge of the blade and to tend to sharpen the same upon the blade being drawn lengthwise of the sheath.

7. In adevice of the class described, in combination, abrasive means and a sheath adapted to hold said abrasive in operative relation to the edge of a blade to sharpen the same and adapted to receive and protect said blade.

8. In a deviceof 'the class described, in

v combination, abrasive means adapted to engage opposite sides of the edge portion of a blade, and means upon which said abrasive means are mounted adapted to engage the body portion of said blade and guide said edge into operative relation to said abrasive means. y

9. In a deviceof the class described, in combination, abrasive means adapted to covact with a curved edge, to rock the same along said edge.

10. In a device of the class described, in combination, a sheath adapted to fit about the edge of an aX-blade and provided with an abrasive lining, and means whereby said sheath may be seized and moved'to sharpen said edge.

11. In a device of the class described, in combination, a sheath adapted to it about the edge of an azz-blade, means connecting said sheath with the handle of the ax and' adapted to permit the same to swing away therefrom, and an abrasive lining in said sheath adaptedto engage and sharpen the edge of the ax. y

l2. In ax construction, in combination, a handle upon which the head of the ax is mounted, a sheath adapted to engage and protect the edge of said ax-head, and means connected with said sheath and pivotally connected with said handle, said pivotal connection comprising a spring-pressed pivot pin adapted to permit the swinging of said sheath about the same and the disconnection. of said connecting means;

13. In ax construction, in combination, an aX-handle, a sheath fitting Aabout the edge of the head of the ax, means vconnected and means adapted with said sheath and pivotally and detachably connected with said handle and adapted to permit the sheath to be swung away from said edge, and an abrasive lining within said sheath adapted to engage said edge and sharpen the same upon being moved with relation thereto.

14. A sheath adapted to protect a blade and abrasive means mounted within and protected by said sheath and adapted to 10 sharpen said blade.

In testimony whereof l affix my signature, in the presence of two witnesses.

ROBERT S. BLAIR.

Witnesses:

H. M. SEAMANS, C. H. WILSON. 

